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Table 5 Muscle strength in the HAL and control groups

From: Training with Hybrid Assistive Limb for walking function after total knee arthroplasty

Response   HAL group Control group   
Visit Mean ± SD   Mean ± SD   P value
Knee extension torque (Nm/kg) Pre 1.10 ± 0.64 (n = 10) 0.91 ± 0.31 (n = 11) 0.373  
Week 2 0.68 ± 0.43 (n = 10) 0.67 ± 0.23 (n = 10) 0.924  
Week 4 0.93 ± 0.32 (n = 10) 0.85 ± 0.23 (n = 11) 0.541  
Week 8 1.15 ± 0.12 (n = 6) 0.88 ± 0.17 (n = 5) 0.014 *
Knee flex torque (Nm/kg) Pre 0.56 ± 0.22 (n = 10) 0.51 ± 0.22 (n = 11)   
Week 2 0.36 ± 0.15 (n = 10) 0.41 ± 0.15 (n = 10)   
Week 4 0.45 ± 0.16 (n = 10) 0.41 ± 0.15 (n = 11)   
Week 8 0.51 ± 0.12 (n = 6) 0.50 ± 0.15 (n = 5)   
  1. *P < 0.05